Before you begin configuring dynamic interfaces, review the concepts described in this section.
A dynamic interface is created automatically and transparently through some external event, typically through the receipt of data over a lower-layer link, such as an ATM virtual circuit (VC) or a virtual LAN (VLAN).
The layers of a dynamic interface are created based on the packets received on the link and can be configured through any one of the following:
You create and configure each layer of a static interface manually through an existing configuration mechanism such as the command-line interface (CLI) or Simple Network Management Protocol (SNMP).
Unlike static interfaces, dynamic interfaces are not restored through nonvolatile storage (NVS) after a reboot.